Fireplace



June 7, 1927.

' W- W. GUY

REPLACE Aug. 7.

(@er/Sm Patented June 7, 1927.

UNITED STATES WALTER! W- GUY, 0F PABX, ILLINOIS, ASSIGNOR 'IO COLONIALFIBEBLACE .C010

.PANEL 0F CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS FIREPLACE.

My present invention relates to fireplaces and more specifically to animproved controlling means for the draft on a iireplace.

Among the objects and advantages of the invention Y may be enumeratedFirst, eliminating the necessity for running rotary shaftsl or othertransmission members through the walls of the iireplace.

Second, maintaining convenience and accuracy of control inspite ofsuclrelimination, and f f Third, simplifyingv the-mechanical trans.-mission exposed to the heat of; the lire.

Further objects and advantages of the invention will becomeapparent' asthe description proceeds. A V

n the accompanying drawings:

Figure 1 is a ore and aft section through. a fireplace, indicating-theapplication ot a structure according to the invention thereJ Figure 2 isa fragmentary similar section showing the parts in a differentposition.V

Figure 3 is` a view on line 3 3 of Figure 1 shwing the transmission inelevation.-

'Figure'4 is a sectional view on line 44 of Figure 3. n

A Figure 5 is an elevation of the handle member, and

Figure 6 is of Figure 2.

In the embodiment of the invention selecty yed for illustration thefireplacey comprises the usual rear wall 10 and front wall 12between'which is formed the throat 14 opening. into the Hue 16. Thedamper 18 is in this instance pivoted at 20 on a unitary dome ,structureincluding, the rear `rail 22 and front plate 24. The foregoingstructurel is old and well known in the art andv per se forms no partofthe present invention.v

A two piece support 26, 28, is suitably fastened. in the throat oppositethe .damper 18, as by fastening it on the plate 24 lb y machine screws27. The lifter 28 is in the form o-fa bell crank lever having one armpivoted at 30 between lugs 82 on the support, and damper bysicle links34. The lever is veX- tended back of its angle at 36 and terminates inVan arcuate shoe Y38. lying in a plane perendicnlar 'to'that of thefrestof the lever and facing the support 26,28; 1

The operating member 40 comprises a lcylindrical portion lpivotally heldbetween a detail section on line 6-6 .the other arm connected to the'Aity of slight irregularities. '15',

" Application filed August 7, 1925. seriai Nq. 48,323.

semi-cylindrical lugs 42 on the sup ort. Above the pivot there is alateral o -set portion 44 and at the end of the off-set an uprightfinger 46 terminating in a slight hook at 48. Below the pivot theoperating member proper terminates in a iattang 50 bent outwardly at anangle of approximately O to the pivotal axis.;`

I provide a handle member 5 2, the in ain reach of which is a shallow Uin cross section 'adapted to fit over the tang 50. A series of'equallyspaced holes 54 is formed in the handle member. device, registeringholes are drilled in the tang-'50 and the parts bolted together by bolts56 as clearly shown in Figure 6. The handle member is'preferably ofcastiron, and in assembling theunit in any particular fireplace it maybe bolted to the tang so as to be of just the right length to project aconvenientdistance below the lower edge oi the front wall 12. It thereach 52 is longer than necessary, the excess at the upper end canv bebroken olf readily by a sharp blow with ahammer.

The lower end of the handle terminates in a target 58 apertured at 60 toreceive the end of a poker or the like for swinging the handle from sideto side. As the plate 24 1s at an angle of substantially 45Ov to thehorizontal, it will be obvious that the 60 bend in the tang 50 will setthe handle 52 at any angle inclined about 15o downwardly land rearwardlyfrom the vertical. To operate the device, the handle 52 is swung fromside to side, either by inserting a tool in the aperture 6() or merelyby pushing against the side of the handle; The movement of the ,damper18 in response to the swinging of the handle will depend'v on thelcontour of In assembling the y the cam face on the shoe 38. The finger46 v of the operating member 40 wipes across this face and pushes thelifter from the position shown `in Figure 2 to that of Figure r1f.Referring in detail to Figure 4, it will be noted that the ends of thecam face are provided with stop hooks 62 to limit the eXtreme movementof theV parts and that the face of the cam is provided with a plural'-More specificalthere is a slight pocket 64 at each end, andportions 66sloping inwardly toward the axis of the operating member, alternatingwith vtwo slight/recessions or portions of lesser inclination at 68. Inoperating the device, there will be a material change in the forcerequired to move the handle each time the finger registers with one ofthe recessione 68. This is of material assistance to the operator individing the range of movement of the handle into three substantiallyequal parts. rlhe inclination of the face oit the cam is nowheresuliiciently steep so that the linger will slip back after the o peratorrelieves the handle 52 of the moving force, but he can feel the partsmove from closed position into position one-third open, two-thirds openand full open. Thus, after moving the parts one-third open, he canselect an intermediate position with considerably greater accuracy thanhe could if the series of intermediate position were not, in fact,marked for him b y the variations in resistance to the movement.A Y

lVithont further elaboration, the foregoing will so fully explain thegist of my invention, that others may, by applying current knowledge,readily adapt the same for use under various conditions of service,without eliminatingcertain features which may properly be said toconstitute the essential items of novelty involved, which items areintended to be defined and secured to me by the following claims.

I claim:

l. A replace having a.- damper pivoted on a horizontal axis, a lifterpivoted on av parallel axis, a link connecting said lifter and damper,yan operating member pivoted on an axis in a vertical plane perpendicularto the damper axis, an offset linger on said operating` member, and agenerally arcuate cam carried by said lifter in operative contact withsaidiingcr, the axis of Said operating member being inclined downwardlyand forwardly, said operating member having a handle portion extendingfrom its front and lower end, said handle portion when` in the verticalplane of the axis of the operating member extending downwardly andrearwardly and being accessible from in front of the fireplace, said camhaving a plurality of portions of greater slope alternating withportions of less slope to guide the operator in settingthe damper, allsaid portions having slopes providing` a friction lock against movementol the handle by the damper.

2. A fireplace having a pivoted damper, a pivoted lifter, a linkconnecting said lifter and damper, a pivoted operating member, a lingeron said operating` member, and a cam carried. by said lifter inoperative Contact with said linger, said ope-rating member having ahandle portion extending downwardly and rearwardly and being accessiblefrom in iront of the fireplacee 3. A fireplace having a pivoted damper,a pivoted lifter, a link connecting said lifter and damper, a pivotedoperating member,

a finger on said operating member, and acam carried by said lifter inoperative contact with said linger, said cam having a plurality ofportions of greater slope alternating with portions of less slope toguide the operator in setting the damper, all said portions havingslopes providing a friction lock against movement of the handle by thedamper. v

4t. A fireplace having a pivoted damper, a lifter, a link connectingsaid lifter and damper, an operating member, and a cam carried by said.lifter Vin operative contact with said operating member.

5. A fireplace having a pivoted damper, a lifter, a link connectingsaidv lifter yand damper, an operatingmember, and a cam carried by saidlifter in operative contact with said operating member, said cam havinga plurality of portions of'greater slope alternating with portions ofless slope to guide the` operator in setting the damper.

6. A fireplace having a pivoted damper, a lifter, a link connecting saidlifter and damper, an operating member, and a cam carried by said lifterin operativecontact with said operating member, said cani having aplurality of portions of greater slope alternating with portions ofless` slope to guide the operator in setting the damper, all saidportions having slopes providing a friction lock against movement of thehandle by the damper. t 7. A fireplace having a pivoted damper, alifter, a link connecting said lifter and damper, an operating member,and` a cam carried by said lifter in operative Contact with said linger,said operating member having a handle portion extending downwardly andbeing accessible from in front of the fireplace. 8..A fireplace domecomprising arframe, a damper, a pivoted element having one endprojecting down and accessible fromv in front of the fireplace, said endbeing apertured to receive the end of a poker for swinging it fromfsideto side, and a linkage between said pivoted element and saidV damper formoving said damper from closed to open position upon movement of saidelement from one extreme position to the other and vice versa, saidlinkage permitting said damper to fallby gravity and being frictionlocked in any position, said linkage offering variable-resistance to theopening movement with two minima at intermediate positions. v

9L A replace dome comprising a frame, a damper, a pivoted element havingone end projecting down 'and accessible from. in front of the fireplace,said end being apertured to receive the endof a poker for swinging itfrom side to` side, and a linkage between said pivote-d element and saiddamper for moving said clamperfrom closed to open position upon mentfrom one eXtreme position to the other and vice versa, said linkagepermitting said damper to fall by gravity and being friction locked inany position, said linka-ge offering variable resistance to the openingmovement.

10. A ireplace dome comprising a frame,

a damper, a pivoted element having one end projecting down andaccessible from in front of the fireplace, said end being apertured toreceive the end of a poker for swinging it from side to side, and alinkage movement of said elebetween said pivoted element and said damperfor moving said damper from closed to open position upon movement ofsaid element from one extreme position to the other and vice versa, saidlinkage permitting said damper to fall by gravity and being frictionlocked in any position, said linkage offering variable resistance to theopening movement with a minimum at an intermediate position.

In Witness whereof, I hereunto subscribe my name this 3rd day of August,1925.

WALTER W. GUY.

